Punch



(No Model.)

J. E. QUINN. PUNCH.-

Patented July 16, 1889.. Z

UNITED STATES PATENT OFFICE.

JOHN E. QUINN, OF TOLEDO, OHIO.

PUNCH.

SPECIFICATION forming part of Letters Patent No. 407,242, dated July 16,1889.

Application filed January 9, 1889.

T0 aZZ whom it may concern:

Be it known that I, JOHN E. QUINN, of Toledo, in the State of Ohio, haveinvented certain new an d useful Improvements inPunch es;

. and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to an improvement in punches, and more particularlyto such as are employed for punching perforations through the flapsforming the mouth of a mail-bag.

Heretofore in the construction of maid-bags the flaps forming the mouthsthereof have been punched with numerous holes for the reception ofrivets which secure the overturned edges of such flaps, saidperforations being in most cases made with a single tool or punch, thusnecessitating a multiplicity of operations to make the required numberof perforations. It has also been necessary to employ separate tools forforming the elongated slots in the flaps for the reception of fasteningstraps, staples, or other devices. It has been customary to providefacing-plates of metal having elongated slots to coincide with the slotsof the flaps, and to produce perforations for the rivets for securingsaid plates the rivetpunches were again brought into use.

It is the object of my present invention to obviate the numerousobjections arising from the use of separate tools for producing theseveral perforations in the flaps at the mouth of a mail-bag, and toproduce a tool by means of which all the perforations necessary in saidflap, of whatever shape, may be made at a single operation.

A further object is to provide a punchingtool by means of which all therivet-holes and elongated slots for the reception of straps or otherdevices may be made in the flaps forming the mouth of a mail-bag at asingle operation.

IVith these objects in view my invention consists in a base orfoundation plate having a series of punches projecting therefrom forproducing rivet-holes, and a second series of punches also projectingfrom said foundationplate for producing elongated slots.

The invention further consists in certain novel features of constructionand peculiar Serial No. 295,854. (No model.)

combinations and arrangements of parts, as hereinafter described, andpointed out in the claims.

In the accompanying drawings, Figure 1 1s a plan view of my improvedpunching-tool. Fig. 2 is a longitudinal sectional view of the same onthe line 00 as of Fig. 1. Fig. 3 1s a horizontal sectional view on theline 1 y of Fi 1.

2 represents a plate of steel or other suitable material adapted to beheld in any suitable device or mechanism.

The plate A is provided from end to end and near each of itslongitudinal edges with a series of alignedperforations a, preferablyhaving their walls partially or entirely screwthreaded for the receptionof the screwthreaded shanks b of a series of hollow punches B. Insteadof screw-threaded perforations a, screw-threaded sockets may beprovided; or, if preferred, the punches B may be secured to the plate Ain any other preferred manner.

The punches B are preferably made tapering on their exterior and withstraight interior walls, being adapted to cut a circular perforation ofsuitable size for the reception of ordinary rivets.

The plate A is further provided at spaced intervals with nine (more orless) elongated slots 0, located centrally between the longitudinaledges of the plate and at right angles to the longitudinal axis thereof.Secured within each of these slots 0 is the shank cl of a hollowelongated punching device 0. The

interior walls of the punching devices are preferably straight, whilethe exterior walls incline outwardly from the top, producing at the basea flange d, which rests against the plate A and prevents the punch fromgoing too far through the elongated slots 0. The interior and exteriorwalls of these elongated punches meet in a sharp cutting-edge at theirouter ends. These elongated punches are intended to cut perforations ofsuitable shape for the reception of a fastening-strap such as employedfor securing the mouth of a mailbag, or staples, also sometimes used forthis purpose.

Plates of metal having elongated slots to coincide with similarly-shapedslots in the flaps at the mouth of a mail-bag are usually secured tosaid flaps to prevent tearing of such slots. It is therefore necessarythat holes be provided for the reception of rivets for securing saidplates in position. For this purpose punches E, similar in all respectsto the punches B, are secured to the plate A at opposite sides ofeachelongated punch C.

Now it will be seen that by means of my improved punch all theperforations both for the reception of rivets and straps or staples maybe made in the flaps at the mouth of a mail-bag at a single operation.

Slight changes might be made in the constructive details of my inventionwithout departing from the spirit thereof or limitingits scope; hence Ido not wish to limit myself to the precise details of constructionherein described; but,

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. A plate having a series of circular punches projecting from one facethereof near each 1011- gitudinal edge, and a series of elongatedpunches also projecting from said plate intermediate of the two seriesof circular punches, substantially as set forth.

2. A plate having a series of circular punches projecting from one facethereof near each longitudinal edge, a series of elongated puncheslocated within the space between the two rows of punches, and series ofcircular punches located between and outside of the elongated punches,substantially as set forth.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

JOHN E. QUINN. W'itnesses:

V. A. OMEARA, JAMES F. MCGEE.

